Enter Your Reply The Comment You're Replying To Rich Hutnik wrote on Sun, Nov 2, 2008 12:13 AM UTC:Proprietary means that the designers, Harper and Seirawan, haven't given anyone permission to use the pieces for any other purposes than what they intended. You can't take the Hawk, and use it as something else, and you are not permitted to use it in any other game, but what Harper and Seirawan approved of, which now is just Bughouse. Ok, people on their own can use them as they choose. But, if you wanted to run a publicized tournament and use their pieces for other than what they intended, you may risk them suing you. This is what is meant by proprietary. Edit Form You may not post a new comment, because ItemID piece sets does not match any item.